Cultivator weeder attachment



l l l Jan.y 7^, 1941.

J. C. AHRENS CULTIVATOR WEEDER ATTACHMENT Filed March 9, 1939 E nl] l ATToRNEYs z sheets-shn 1 `Fan. `7, 1941. J. c. AHRr-:NsA

cULTlvAToR wEEDER ATTACHMENT Filed March 9, 1939 2 Sheets-Sheet 2 ATTORN EYS ntcnted Jan.. 7, 1941 CUL'EHVATR WEEDER ATTAC l .io rens, Heron Lake'.

Anplicotion March 9, 1939,-Serial No. 261mm l1 mains..

My invention relates to agricultural implements, and has among its objects .and advantages the provision of an improved cultivator weeder attachment.

in object of my invention is to provide a weeder attachment adapted for connection with corn cultivators and the like, in which the weeder embodies weeding tines arranged in such a manner as vto facilitate self cleaning so eis to prevent the sccumulation ci weed roots and the like. The attachment is particularly adapted to cultivators of the tractor type, and is designed to span two rows of corn. The weeding tines etre formed of resilient material, and are resiliently mounted with oiterriate tines spaced forwardly oi the other tines.

iin coalition, the two tiriesl positioned at each enel oi the line ci tines ere shorter than the reniainine tines, and ere so orronseol as to s treoldle two rows oi corn. 'Iiius the corn y he cultivveterl close to the growth without domage to the roots, while the renine tines penetrate the soil to such o depth os to neriorin emcient weeolino function. weeding tiiies to import o. vigorous cultivating ec tion on the soil traversed hy the troctoi' wheels. The tines perform an emcient cultivating action so es to nulverise the soil in addition to their weeding function..

' lin the ocooinnenyine olrowings,

insure l is a reni' elevctionnl view oi the invention;

iiieure 2 is o sectional view alone the line i--t oi itinere i;

e 3 is a detailed view of the tine mounting;

rieures is o sectional view clone the line oi Fleurs 3, end l Figure 5 is o. perspective view oi a portion loi the ironie structure.

lin the embodiment selected to illustrate my invention, ll moire use of o. cross heom it which may comprise an angle iron to which l connect a nlm nitty oi long tines i2, enel shorter tines it. Tinos iii enel iti are towed, es illustrated in Figure 2, with the concovities oi the tines racine the direction or travel. @tenante tines it und it tane no om; positions in aolvonce oi the remaining tines, es illustroteo at it in Figure 2.

e tines it ore identicol in construction with the exception oi the elternote oset arrangement illtroted in Figure 2. Tinos it ere also identicnl in construction, with the exception of their oset arrangement. Figure i illustrates the tines it no heine ol eouol length so iai' es cultivating olenth is concerned, while the tines it are oleo of Moens ore associano with the' common length with respect to cultivating depth. All the tines are equally spaced along the beam it und the overall length of the tine ossemhly is suicient to span two rows of com it. Each row A of growth it is positioned between two of the tines All the tines are connected with the beam lll in the same manner so that description of one will apply to all. Referring to the Figures 3 and e, the vertical tienne 2li oi the beam it is slotted et t2 for the reception of the tines it and it. Each tine is provided. with a convolution 2t, and s right annular reach it located in a recess 2t in o plete t@ positioned underneath the horizontal harige tt oi the hoorn.

Plate te and 'the hanne it. are provided with an nliuned opening @t ior the reception. ci e. holt tt which clomos the plate tothe iiange t2. it the some time. the right nnsular reach tt lies scent the verticei nance it so as to he held. in the recess it. e the slots 22 ore consideronly longer than the diameter oi the tines it ond i it, the right angular renches it ere restrained from relative loneitul'luial movements because of the close ttlng relation between the sides of the recesses and the tines proper.

The tines ore iormeoi oi suitable sonne meterial so es to yield when meeting heovy obstructions such as rocks to prevent clamoee to the tine/s. however. the tines are sunicieiitly sti to penetrate the soil to the necessary cultivating oienth for the removal of weeds ond weed roots. Convolutions Eitl'lencl ouditional resiliency to the tines in the vicinity ci their connections with they hoorn l@ so as to einem ooiclitional protection-tor the tlnes.

hints 22y provide odation loi' relative movement of the tines. le the tines I2 und it ore closely spoced, es when viewing Figure l, the alternate offsetting of the tnes, es illustrated in Figure 2, provides an arrangement which facilitotes cleaning of weeds and weecl roots. I have found that such an arrangement of tines eliminotes accumulation of weed roots removed from the soil. While the tines it are closely related to the rows it, their shallow cultivation depth eff iords protection for the roots of the growth.

in Flgurel, I indicate generally the tractor wheels ct 38. Adjacent esch end oi the beam I0 i mount two hat spring tines tu which are so located es to cultivate the soil traversed by the tractor wheels 38. Figure 2 illustrates the curvature of the spring piece t0, which curvature is considerably more .pronounced then in the tines it and M. Figures 1 and 2 illustrate the nat spring tines as being mounted on shafts 42 which parallel the beam i8 but are spaced somewhat rearwardly thereof.

Figure 2 illustrates the manner in which the tines 40 are connected with the shaft 42. Only one mount is illustrated, but all the mounts are identical in construction. The clamp 44 comprises sections 46 recessed at 48 to partly embrace the shaft 42. Bolt 50 passes through one end of the sections 46, While the tines 48 are provided with threaded ends 52 extending through openings in the other end of the sections 46 for the reception of nuts 54 so that the sections may be firmly clamped upon the shaft 42.

Shafts 42 constitute right angular extensions of shaft runs 56 to which the beam I0 is secured. The clamp 58 is mounted on each end of the horizontal flange 32 of the beam I0. Each clamp 58 comprises sections 60 which arerecessed at 62 to partly embrace the respective shaft run 56. Bolts 64 extend through openings in the flange 32 and the section 68 is for clamping the parts into a .unitary assembly as wellas in xedrelation with the shaft run 56.

To the forward end of the shaft run 56 I connect T-couplings 66 which have tubular parts 68 rotatably mounted on a cross bar 10 which constitutes a mount for the tractor coupling (not shown and which forms no part of the present invention). by a set screw 14. 'I'he lower end of the arm 12 is pivotally connected at 16 with a link 18 which may be connected'with a lever operated An arm 12 is keyed to the pipe 18 from the tractor. Arms 88 are xedly related to the pipe 18 and have their upper ends bored at 82 vfor slidably receiving a shaft 84 provided with right angular bends 86 passed through Vopenings 88 in brackets 80 bolted to the runs 56.

A collar 82 is fixedly related to each of the rods 84, and between each ycollar 92 and the upper end of the associated bar I interpose a compression spring 94. Link 18 and its associated parts such as the bars 80, the rods 84, and lthe springs 84 are old and well known in the art and need not be described in further detail. Suice it to say that the pipe 10 may be rotated through at right angles to said legs and fixedly secured thereto, ground engaging tines carried by said beam, heavy duty tines carried by said shafts, said shafts paralleling said beam but being located rearwardly thereof to bring said heavy duty tines directly in the rear of the traction wheels of the tractor.

' JOHN C. AHRENS. 

